中国瓣甲鱼类化石的生物地层学意义 |
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引用本文: | 姬书安. 中国瓣甲鱼类化石的生物地层学意义[J]. 地层学杂志, 1996, 20(3): 161-164 |
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作者姓名: | 姬书安 |
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摘 要: | 瓣甲鱼类在我国泥盆系中分布较广,具有相当重要的生物地层学意义。根据化石在地层中的分布,我国的辦甲鱼类自上而下可分为5个组合(带):拟辦鱼一广西辦甲鱼(Quasipetalichthys-Guangsipetalichthys)组合,宽头鱼(Eurycaraspis)带,中华瓣甲鱼-西南瓣甲鱼(Sinipetalichthys-Xinanpetalichthys)组合,新瓣鱼(Neopetalichthys)带,滇东瓣甲鱼(Diandongpetalichthys)带。它们的时代分别相当于吉维期,吉维期早期,布拉格期,布拉格期早期和洛赫科夫期早期。
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关 键 词: | 中国 瓣甲鱼类 泥盆系 生物地层学 |
The biostratigraphy of petalichthyids(Placodermi)in China |
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Abstract: | The Devonian petalichthyids were widely discovered from South China and Northwestern China.Five petalichthyid assemblages(Zones)descendingly are identified here:Quasipetalichthys-Guangsipetalichthys Assemblage,Eurycarapis Zone, Sinopetalichthys-Xinanpetalichtys Assemblage,Neopetalichthys Zone and Diandongpetal- ichthys Zone.The geological ages are regarded as Givetian,early Givetian,Pragian,early Pragian and early Lochkovian respectively.Petalichthyids may originate from Late Sil- urian arthrodires in South China.South China is one of the evolutionary centres and one of the important biogeographical provinces of petalichthyids. |
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Keywords: | China petalichthyids Devonian biostratigraphy |
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